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freebsd-skq/sys/dev/usb/controller/uss820dci.c
hselasky c081610de9 Inherit USB mode from RootHUB port where the USB device is connected. 
Only RootHUB ports can be dual mode. Disallow OTG ports on external HUBs.
This simplifies some checks in the USB controller drivers.

MFC after:	1 week
2012-10-01 05:42:43 +00:00

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/* $FreeBSD$ */
/*-
* Copyright (c) 2008 Hans Petter Selasky <hselasky@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* This file contains the driver for the USS820 series USB Device
* Controller
*
* NOTE: The datasheet does not document everything.
*/
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#define USB_DEBUG_VAR uss820dcidebug
#include <dev/usb/usb_core.h>
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_transfer.h>
#include <dev/usb/usb_device.h>
#include <dev/usb/usb_hub.h>
#include <dev/usb/usb_util.h>
#include <dev/usb/usb_controller.h>
#include <dev/usb/usb_bus.h>
#include <dev/usb/controller/uss820dci.h>
#define USS820_DCI_BUS2SC(bus) \
((struct uss820dci_softc *)(((uint8_t *)(bus)) - \
((uint8_t *)&(((struct uss820dci_softc *)0)->sc_bus))))
#define USS820_DCI_PC2SC(pc) \
USS820_DCI_BUS2SC(USB_DMATAG_TO_XROOT((pc)->tag_parent)->bus)
#ifdef USB_DEBUG
static int uss820dcidebug = 0;
static SYSCTL_NODE(_hw_usb, OID_AUTO, uss820dci, CTLFLAG_RW, 0,
"USB uss820dci");
SYSCTL_INT(_hw_usb_uss820dci, OID_AUTO, debug, CTLFLAG_RW,
&uss820dcidebug, 0, "uss820dci debug level");
#endif
#define USS820_DCI_INTR_ENDPT 1
/* prototypes */
struct usb_bus_methods uss820dci_bus_methods;
struct usb_pipe_methods uss820dci_device_bulk_methods;
struct usb_pipe_methods uss820dci_device_ctrl_methods;
struct usb_pipe_methods uss820dci_device_intr_methods;
struct usb_pipe_methods uss820dci_device_isoc_fs_methods;
static uss820dci_cmd_t uss820dci_setup_rx;
static uss820dci_cmd_t uss820dci_data_rx;
static uss820dci_cmd_t uss820dci_data_tx;
static uss820dci_cmd_t uss820dci_data_tx_sync;
static void uss820dci_device_done(struct usb_xfer *, usb_error_t);
static void uss820dci_do_poll(struct usb_bus *);
static void uss820dci_standard_done(struct usb_xfer *);
static void uss820dci_intr_set(struct usb_xfer *, uint8_t);
static void uss820dci_update_shared_1(struct uss820dci_softc *, uint8_t,
uint8_t, uint8_t);
static void uss820dci_root_intr(struct uss820dci_softc *);
/*
* Here is a list of what the USS820D chip can support. The main
* limitation is that the sum of the buffer sizes must be less than
* 1120 bytes.
*/
static const struct usb_hw_ep_profile
uss820dci_ep_profile[] = {
[0] = {
.max_in_frame_size = 32,
.max_out_frame_size = 32,
.is_simplex = 0,
.support_control = 1,
},
[1] = {
.max_in_frame_size = 64,
.max_out_frame_size = 64,
.is_simplex = 0,
.support_multi_buffer = 1,
.support_bulk = 1,
.support_interrupt = 1,
.support_in = 1,
.support_out = 1,
},
[2] = {
.max_in_frame_size = 8,
.max_out_frame_size = 8,
.is_simplex = 0,
.support_multi_buffer = 1,
.support_bulk = 1,
.support_interrupt = 1,
.support_in = 1,
.support_out = 1,
},
[3] = {
.max_in_frame_size = 256,
.max_out_frame_size = 256,
.is_simplex = 0,
.support_multi_buffer = 1,
.support_isochronous = 1,
.support_in = 1,
.support_out = 1,
},
};
static void
uss820dci_update_shared_1(struct uss820dci_softc *sc, uint8_t reg,
uint8_t keep_mask, uint8_t set_mask)
{
uint8_t temp;
USS820_WRITE_1(sc, USS820_PEND, 1);
temp = USS820_READ_1(sc, reg);
temp &= (keep_mask);
temp |= (set_mask);
USS820_WRITE_1(sc, reg, temp);
USS820_WRITE_1(sc, USS820_PEND, 0);
}
static void
uss820dci_get_hw_ep_profile(struct usb_device *udev,
const struct usb_hw_ep_profile **ppf, uint8_t ep_addr)
{
if (ep_addr == 0) {
*ppf = uss820dci_ep_profile + 0;
} else if (ep_addr < 5) {
*ppf = uss820dci_ep_profile + 1;
} else if (ep_addr < 7) {
*ppf = uss820dci_ep_profile + 2;
} else if (ep_addr == 7) {
*ppf = uss820dci_ep_profile + 3;
} else {
*ppf = NULL;
}
}
static void
uss820dci_pull_up(struct uss820dci_softc *sc)
{
uint8_t temp;
/* pullup D+, if possible */
if (!sc->sc_flags.d_pulled_up &&
sc->sc_flags.port_powered) {
sc->sc_flags.d_pulled_up = 1;
DPRINTF("\n");
temp = USS820_READ_1(sc, USS820_MCSR);
temp |= USS820_MCSR_DPEN;
USS820_WRITE_1(sc, USS820_MCSR, temp);
}
}
static void
uss820dci_pull_down(struct uss820dci_softc *sc)
{
uint8_t temp;
/* pulldown D+, if possible */
if (sc->sc_flags.d_pulled_up) {
sc->sc_flags.d_pulled_up = 0;
DPRINTF("\n");
temp = USS820_READ_1(sc, USS820_MCSR);
temp &= ~USS820_MCSR_DPEN;
USS820_WRITE_1(sc, USS820_MCSR, temp);
}
}
static void
uss820dci_wakeup_peer(struct uss820dci_softc *sc)
{
if (!(sc->sc_flags.status_suspend)) {
return;
}
DPRINTFN(0, "not supported\n");
}
static void
uss820dci_set_address(struct uss820dci_softc *sc, uint8_t addr)
{
DPRINTFN(5, "addr=%d\n", addr);
USS820_WRITE_1(sc, USS820_FADDR, addr);
}
static uint8_t
uss820dci_setup_rx(struct uss820dci_td *td)
{
struct uss820dci_softc *sc;
struct usb_device_request req;
uint16_t count;
uint8_t rx_stat;
uint8_t temp;
/* select the correct endpoint */
bus_space_write_1(td->io_tag, td->io_hdl,
USS820_EPINDEX, td->ep_index);
/* read out FIFO status */
rx_stat = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXSTAT);
/* get pointer to softc */
sc = USS820_DCI_PC2SC(td->pc);
DPRINTFN(5, "rx_stat=0x%02x rem=%u\n", rx_stat, td->remainder);
if (!(rx_stat & USS820_RXSTAT_RXSETUP)) {
goto not_complete;
}
/* clear did stall */
td->did_stall = 0;
/* clear stall and all I/O */
uss820dci_update_shared_1(sc, USS820_EPCON,
0xFF ^ (USS820_EPCON_TXSTL |
USS820_EPCON_RXSTL |
USS820_EPCON_RXIE |
USS820_EPCON_TXOE), 0);
/* clear end overwrite flag */
uss820dci_update_shared_1(sc, USS820_RXSTAT,
0xFF ^ USS820_RXSTAT_EDOVW, 0);
/* get the packet byte count */
count = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXCNTL);
count |= (bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXCNTH) << 8);
count &= 0x3FF;
/* verify data length */
if (count != td->remainder) {
DPRINTFN(0, "Invalid SETUP packet "
"length, %d bytes\n", count);
goto setup_not_complete;
}
if (count != sizeof(req)) {
DPRINTFN(0, "Unsupported SETUP packet "
"length, %d bytes\n", count);
goto setup_not_complete;
}
/* receive data */
bus_space_read_multi_1(td->io_tag, td->io_hdl,
USS820_RXDAT, (void *)&req, sizeof(req));
/* read out FIFO status */
rx_stat = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXSTAT);
if (rx_stat & (USS820_RXSTAT_EDOVW |
USS820_RXSTAT_STOVW)) {
DPRINTF("new SETUP packet received\n");
return (1); /* not complete */
}
/* clear receive setup bit */
uss820dci_update_shared_1(sc, USS820_RXSTAT,
0xFF ^ (USS820_RXSTAT_RXSETUP |
USS820_RXSTAT_EDOVW |
USS820_RXSTAT_STOVW), 0);
/* set RXFFRC bit */
temp = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXCON);
temp |= USS820_RXCON_RXFFRC;
bus_space_write_1(td->io_tag, td->io_hdl,
USS820_RXCON, temp);
/* copy data into real buffer */
usbd_copy_in(td->pc, 0, &req, sizeof(req));
td->offset = sizeof(req);
td->remainder = 0;
/* sneak peek the set address */
if ((req.bmRequestType == UT_WRITE_DEVICE) &&
(req.bRequest == UR_SET_ADDRESS)) {
sc->sc_dv_addr = req.wValue[0] & 0x7F;
} else {
sc->sc_dv_addr = 0xFF;
}
/* reset TX FIFO */
temp = USS820_READ_1(sc, USS820_TXCON);
temp |= USS820_TXCON_TXCLR;
USS820_WRITE_1(sc, USS820_TXCON, temp);
temp &= ~USS820_TXCON_TXCLR;
USS820_WRITE_1(sc, USS820_TXCON, temp);
return (0); /* complete */
setup_not_complete:
/* set RXFFRC bit */
temp = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXCON);
temp |= USS820_RXCON_RXFFRC;
bus_space_write_1(td->io_tag, td->io_hdl,
USS820_RXCON, temp);
/* FALLTHROUGH */
not_complete:
/* abort any ongoing transfer */
if (!td->did_stall) {
DPRINTFN(5, "stalling\n");
/* set stall */
uss820dci_update_shared_1(sc, USS820_EPCON, 0xFF,
(USS820_EPCON_TXSTL | USS820_EPCON_RXSTL));
td->did_stall = 1;
}
/* clear end overwrite flag, if any */
if (rx_stat & USS820_RXSTAT_RXSETUP) {
uss820dci_update_shared_1(sc, USS820_RXSTAT,
0xFF ^ (USS820_RXSTAT_EDOVW |
USS820_RXSTAT_STOVW |
USS820_RXSTAT_RXSETUP), 0);
}
return (1); /* not complete */
}
static uint8_t
uss820dci_data_rx(struct uss820dci_td *td)
{
struct usb_page_search buf_res;
uint16_t count;
uint8_t rx_flag;
uint8_t rx_stat;
uint8_t rx_cntl;
uint8_t to;
uint8_t got_short;
to = 2; /* don't loop forever! */
got_short = 0;
/* select the correct endpoint */
bus_space_write_1(td->io_tag, td->io_hdl, USS820_EPINDEX, td->ep_index);
/* check if any of the FIFO banks have data */
repeat:
/* read out FIFO flag */
rx_flag = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXFLG);
/* read out FIFO status */
rx_stat = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXSTAT);
DPRINTFN(5, "rx_stat=0x%02x rx_flag=0x%02x rem=%u\n",
rx_stat, rx_flag, td->remainder);
if (rx_stat & (USS820_RXSTAT_RXSETUP |
USS820_RXSTAT_RXSOVW |
USS820_RXSTAT_EDOVW)) {
if (td->remainder == 0) {
/*
* We are actually complete and have
* received the next SETUP
*/
DPRINTFN(5, "faking complete\n");
return (0); /* complete */
}
/*
* USB Host Aborted the transfer.
*/
td->error = 1;
return (0); /* complete */
}
/* check for errors */
if (rx_flag & (USS820_RXFLG_RXOVF |
USS820_RXFLG_RXURF)) {
DPRINTFN(5, "overflow or underflow\n");
/* should not happen */
td->error = 1;
return (0); /* complete */
}
/* check status */
if (!(rx_flag & (USS820_RXFLG_RXFIF0 |
USS820_RXFLG_RXFIF1))) {
/* read out EPCON register */
/* enable RX input */
if (!td->did_enable) {
uss820dci_update_shared_1(USS820_DCI_PC2SC(td->pc),
USS820_EPCON, 0xFF, USS820_EPCON_RXIE);
td->did_enable = 1;
}
return (1); /* not complete */
}
/* get the packet byte count */
count = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXCNTL);
count |= (bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXCNTH) << 8);
count &= 0x3FF;
DPRINTFN(5, "count=0x%04x\n", count);
/* verify the packet byte count */
if (count != td->max_packet_size) {
if (count < td->max_packet_size) {
/* we have a short packet */
td->short_pkt = 1;
got_short = 1;
} else {
/* invalid USB packet */
td->error = 1;
return (0); /* we are complete */
}
}
/* verify the packet byte count */
if (count > td->remainder) {
/* invalid USB packet */
td->error = 1;
return (0); /* we are complete */
}
while (count > 0) {
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* receive data */
bus_space_read_multi_1(td->io_tag, td->io_hdl,
USS820_RXDAT, buf_res.buffer, buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
/* set RXFFRC bit */
rx_cntl = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXCON);
rx_cntl |= USS820_RXCON_RXFFRC;
bus_space_write_1(td->io_tag, td->io_hdl,
USS820_RXCON, rx_cntl);
/* check if we are complete */
if ((td->remainder == 0) || got_short) {
if (td->short_pkt) {
/* we are complete */
return (0);
}
/* else need to receive a zero length packet */
}
if (--to) {
goto repeat;
}
return (1); /* not complete */
}
static uint8_t
uss820dci_data_tx(struct uss820dci_td *td)
{
struct usb_page_search buf_res;
uint16_t count;
uint16_t count_copy;
uint8_t rx_stat;
uint8_t tx_flag;
uint8_t to;
/* select the correct endpoint */
bus_space_write_1(td->io_tag, td->io_hdl,
USS820_EPINDEX, td->ep_index);
to = 2; /* don't loop forever! */
repeat:
/* read out TX FIFO flags */
tx_flag = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_TXFLG);
/* read out RX FIFO status last */
rx_stat = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXSTAT);
DPRINTFN(5, "rx_stat=0x%02x tx_flag=0x%02x rem=%u\n",
rx_stat, tx_flag, td->remainder);
if (rx_stat & (USS820_RXSTAT_RXSETUP |
USS820_RXSTAT_RXSOVW |
USS820_RXSTAT_EDOVW)) {
/*
* The current transfer was aborted
* by the USB Host
*/
td->error = 1;
return (0); /* complete */
}
if (tx_flag & (USS820_TXFLG_TXOVF |
USS820_TXFLG_TXURF)) {
td->error = 1;
return (0); /* complete */
}
if (tx_flag & USS820_TXFLG_TXFIF0) {
if (tx_flag & USS820_TXFLG_TXFIF1) {
return (1); /* not complete */
}
}
if ((!td->support_multi_buffer) &&
(tx_flag & (USS820_TXFLG_TXFIF0 |
USS820_TXFLG_TXFIF1))) {
return (1); /* not complete */
}
count = td->max_packet_size;
if (td->remainder < count) {
/* we have a short packet */
td->short_pkt = 1;
count = td->remainder;
}
count_copy = count;
while (count > 0) {
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* transmit data */
bus_space_write_multi_1(td->io_tag, td->io_hdl,
USS820_TXDAT, buf_res.buffer, buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
/* post-write high packet byte count first */
bus_space_write_1(td->io_tag, td->io_hdl,
USS820_TXCNTH, count_copy >> 8);
/* post-write low packet byte count last */
bus_space_write_1(td->io_tag, td->io_hdl,
USS820_TXCNTL, count_copy);
/*
* Enable TX output, which must happen after that we have written
* data into the FIFO. This is undocumented.
*/
if (!td->did_enable) {
uss820dci_update_shared_1(USS820_DCI_PC2SC(td->pc),
USS820_EPCON, 0xFF, USS820_EPCON_TXOE);
td->did_enable = 1;
}
/* check remainder */
if (td->remainder == 0) {
if (td->short_pkt) {
return (0); /* complete */
}
/* else we need to transmit a short packet */
}
if (--to) {
goto repeat;
}
return (1); /* not complete */
}
static uint8_t
uss820dci_data_tx_sync(struct uss820dci_td *td)
{
struct uss820dci_softc *sc;
uint8_t rx_stat;
uint8_t tx_flag;
/* select the correct endpoint */
bus_space_write_1(td->io_tag, td->io_hdl,
USS820_EPINDEX, td->ep_index);
/* read out TX FIFO flag */
tx_flag = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_TXFLG);
/* read out RX FIFO status last */
rx_stat = bus_space_read_1(td->io_tag, td->io_hdl,
USS820_RXSTAT);
DPRINTFN(5, "rx_stat=0x%02x rem=%u\n", rx_stat, td->remainder);
if (rx_stat & (USS820_RXSTAT_RXSETUP |
USS820_RXSTAT_RXSOVW |
USS820_RXSTAT_EDOVW)) {
DPRINTFN(5, "faking complete\n");
/* Race condition */
return (0); /* complete */
}
DPRINTFN(5, "tx_flag=0x%02x rem=%u\n",
tx_flag, td->remainder);
if (tx_flag & (USS820_TXFLG_TXOVF |
USS820_TXFLG_TXURF)) {
td->error = 1;
return (0); /* complete */
}
if (tx_flag & (USS820_TXFLG_TXFIF0 |
USS820_TXFLG_TXFIF1)) {
return (1); /* not complete */
}
sc = USS820_DCI_PC2SC(td->pc);
if (sc->sc_dv_addr != 0xFF) {
/* write function address */
uss820dci_set_address(sc, sc->sc_dv_addr);
}
return (0); /* complete */
}
static uint8_t
uss820dci_xfer_do_fifo(struct usb_xfer *xfer)
{
struct uss820dci_td *td;
DPRINTFN(9, "\n");
td = xfer->td_transfer_cache;
while (1) {
if ((td->func) (td)) {
/* operation in progress */
break;
}
if (((void *)td) == xfer->td_transfer_last) {
goto done;
}
if (td->error) {
goto done;
} else if (td->remainder > 0) {
/*
* We had a short transfer. If there is no alternate
* next, stop processing !
*/
if (!td->alt_next) {
goto done;
}
}
/*
* Fetch the next transfer descriptor.
*/
td = td->obj_next;
xfer->td_transfer_cache = td;
}
return (1); /* not complete */
done:
/* compute all actual lengths */
uss820dci_standard_done(xfer);
return (0); /* complete */
}
static void
uss820dci_interrupt_poll(struct uss820dci_softc *sc)
{
struct usb_xfer *xfer;
repeat:
TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) {
if (!uss820dci_xfer_do_fifo(xfer)) {
/* queue has been modified */
goto repeat;
}
}
}
static void
uss820dci_wait_suspend(struct uss820dci_softc *sc, uint8_t on)
{
uint8_t scr;
uint8_t scratch;
scr = USS820_READ_1(sc, USS820_SCR);
scratch = USS820_READ_1(sc, USS820_SCRATCH);
if (on) {
scr |= USS820_SCR_IE_SUSP;
scratch &= ~USS820_SCRATCH_IE_RESUME;
} else {
scr &= ~USS820_SCR_IE_SUSP;
scratch |= USS820_SCRATCH_IE_RESUME;
}
USS820_WRITE_1(sc, USS820_SCR, scr);
USS820_WRITE_1(sc, USS820_SCRATCH, scratch);
}
void
uss820dci_interrupt(struct uss820dci_softc *sc)
{
uint8_t ssr;
uint8_t event;
USB_BUS_LOCK(&sc->sc_bus);
ssr = USS820_READ_1(sc, USS820_SSR);
ssr &= (USS820_SSR_SUSPEND |
USS820_SSR_RESUME |
USS820_SSR_RESET);
/* acknowledge all interrupts */
uss820dci_update_shared_1(sc, USS820_SSR, 0, 0);
/* check for any bus state change interrupts */
if (ssr) {
event = 0;
if (ssr & USS820_SSR_RESET) {
sc->sc_flags.status_bus_reset = 1;
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 0;
sc->sc_flags.change_connect = 1;
/* disable resume interrupt */
uss820dci_wait_suspend(sc, 1);
event = 1;
}
/*
* If "RESUME" and "SUSPEND" is set at the same time
* we interpret that like "RESUME". Resume is set when
* there is at least 3 milliseconds of inactivity on
* the USB BUS.
*/
if (ssr & USS820_SSR_RESUME) {
if (sc->sc_flags.status_suspend) {
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 1;
/* disable resume interrupt */
uss820dci_wait_suspend(sc, 1);
event = 1;
}
} else if (ssr & USS820_SSR_SUSPEND) {
if (!sc->sc_flags.status_suspend) {
sc->sc_flags.status_suspend = 1;
sc->sc_flags.change_suspend = 1;
/* enable resume interrupt */
uss820dci_wait_suspend(sc, 0);
event = 1;
}
}
if (event) {
DPRINTF("real bus interrupt 0x%02x\n", ssr);
/* complete root HUB interrupt endpoint */
uss820dci_root_intr(sc);
}
}
/* acknowledge all SBI interrupts */
uss820dci_update_shared_1(sc, USS820_SBI, 0, 0);
/* acknowledge all SBI1 interrupts */
uss820dci_update_shared_1(sc, USS820_SBI1, 0, 0);
/* poll all active transfers */
uss820dci_interrupt_poll(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
uss820dci_setup_standard_chain_sub(struct uss820_std_temp *temp)
{
struct uss820dci_td *td;
/* get current Transfer Descriptor */
td = temp->td_next;
temp->td = td;
/* prepare for next TD */
temp->td_next = td->obj_next;
/* fill out the Transfer Descriptor */
td->func = temp->func;
td->pc = temp->pc;
td->offset = temp->offset;
td->remainder = temp->len;
td->error = 0;
td->did_enable = 0;
td->did_stall = temp->did_stall;
td->short_pkt = temp->short_pkt;
td->alt_next = temp->setup_alt_next;
}
static void
uss820dci_setup_standard_chain(struct usb_xfer *xfer)
{
struct uss820_std_temp temp;
struct uss820dci_softc *sc;
struct uss820dci_td *td;
uint32_t x;
uint8_t ep_no;
DPRINTFN(9, "addr=%d endpt=%d sumlen=%d speed=%d\n",
xfer->address, UE_GET_ADDR(xfer->endpointno),
xfer->sumlen, usbd_get_speed(xfer->xroot->udev));
temp.max_frame_size = xfer->max_frame_size;
td = xfer->td_start[0];
xfer->td_transfer_first = td;
xfer->td_transfer_cache = td;
/* setup temp */
temp.pc = NULL;
temp.td = NULL;
temp.td_next = xfer->td_start[0];
temp.offset = 0;
temp.setup_alt_next = xfer->flags_int.short_frames_ok;
temp.did_stall = !xfer->flags_int.control_stall;
sc = USS820_DCI_BUS2SC(xfer->xroot->bus);
ep_no = (xfer->endpointno & UE_ADDR);
/* check if we should prepend a setup message */
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
temp.func = &uss820dci_setup_rx;
temp.len = xfer->frlengths[0];
temp.pc = xfer->frbuffers + 0;
temp.short_pkt = temp.len ? 1 : 0;
/* check for last frame */
if (xfer->nframes == 1) {
/* no STATUS stage yet, SETUP is last */
if (xfer->flags_int.control_act)
temp.setup_alt_next = 0;
}
uss820dci_setup_standard_chain_sub(&temp);
}
x = 1;
} else {
x = 0;
}
if (x != xfer->nframes) {
if (xfer->endpointno & UE_DIR_IN) {
temp.func = &uss820dci_data_tx;
} else {
temp.func = &uss820dci_data_rx;
}
/* setup "pc" pointer */
temp.pc = xfer->frbuffers + x;
}
while (x != xfer->nframes) {
/* DATA0 / DATA1 message */
temp.len = xfer->frlengths[x];
x++;
if (x == xfer->nframes) {
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_act) {
temp.setup_alt_next = 0;
}
} else {
temp.setup_alt_next = 0;
}
}
if (temp.len == 0) {
/* make sure that we send an USB packet */
temp.short_pkt = 0;
} else {
/* regular data transfer */
temp.short_pkt = (xfer->flags.force_short_xfer) ? 0 : 1;
}
uss820dci_setup_standard_chain_sub(&temp);
if (xfer->flags_int.isochronous_xfr) {
temp.offset += temp.len;
} else {
/* get next Page Cache pointer */
temp.pc = xfer->frbuffers + x;
}
}
/* check for control transfer */
if (xfer->flags_int.control_xfr) {
uint8_t need_sync;
/* always setup a valid "pc" pointer for status and sync */
temp.pc = xfer->frbuffers + 0;
temp.len = 0;
temp.short_pkt = 0;
temp.setup_alt_next = 0;
/* check if we should append a status stage */
if (!xfer->flags_int.control_act) {
/*
* Send a DATA1 message and invert the current
* endpoint direction.
*/
if (xfer->endpointno & UE_DIR_IN) {
temp.func = &uss820dci_data_rx;
need_sync = 0;
} else {
temp.func = &uss820dci_data_tx;
need_sync = 1;
}
temp.len = 0;
temp.short_pkt = 0;
uss820dci_setup_standard_chain_sub(&temp);
if (need_sync) {
/* we need a SYNC point after TX */
temp.func = &uss820dci_data_tx_sync;
uss820dci_setup_standard_chain_sub(&temp);
}
}
}
/* must have at least one frame! */
td = temp.td;
xfer->td_transfer_last = td;
}
static void
uss820dci_timeout(void *arg)
{
struct usb_xfer *xfer = arg;
DPRINTF("xfer=%p\n", xfer);
USB_BUS_LOCK_ASSERT(xfer->xroot->bus, MA_OWNED);
/* transfer is transferred */
uss820dci_device_done(xfer, USB_ERR_TIMEOUT);
}
static void
uss820dci_intr_set(struct usb_xfer *xfer, uint8_t set)
{
struct uss820dci_softc *sc = USS820_DCI_BUS2SC(xfer->xroot->bus);
uint8_t ep_no = (xfer->endpointno & UE_ADDR);
uint8_t ep_reg;
uint8_t temp;
DPRINTFN(15, "endpoint 0x%02x\n", xfer->endpointno);
if (ep_no > 3) {
ep_reg = USS820_SBIE1;
} else {
ep_reg = USS820_SBIE;
}
ep_no &= 3;
ep_no = 1 << (2 * ep_no);
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
ep_no <<= 1; /* RX interrupt only */
} else {
ep_no |= (ep_no << 1); /* RX and TX interrupt */
}
} else {
if (!(xfer->endpointno & UE_DIR_IN)) {
ep_no <<= 1;
}
}
temp = USS820_READ_1(sc, ep_reg);
if (set) {
temp |= ep_no;
} else {
temp &= ~ep_no;
}
USS820_WRITE_1(sc, ep_reg, temp);
}
static void
uss820dci_start_standard_chain(struct usb_xfer *xfer)
{
DPRINTFN(9, "\n");
/* poll one time */
if (uss820dci_xfer_do_fifo(xfer)) {
/*
* Only enable the endpoint interrupt when we are
* actually waiting for data, hence we are dealing
* with level triggered interrupts !
*/
uss820dci_intr_set(xfer, 1);
/* put transfer on interrupt queue */
usbd_transfer_enqueue(&xfer->xroot->bus->intr_q, xfer);
/* start timeout, if any */
if (xfer->timeout != 0) {
usbd_transfer_timeout_ms(xfer,
&uss820dci_timeout, xfer->timeout);
}
}
}
static void
uss820dci_root_intr(struct uss820dci_softc *sc)
{
DPRINTFN(9, "\n");
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
/* set port bit */
sc->sc_hub_idata[0] = 0x02; /* we only have one port */
uhub_root_intr(&sc->sc_bus, sc->sc_hub_idata,
sizeof(sc->sc_hub_idata));
}
static usb_error_t
uss820dci_standard_done_sub(struct usb_xfer *xfer)
{
struct uss820dci_td *td;
uint32_t len;
uint8_t error;
DPRINTFN(9, "\n");
td = xfer->td_transfer_cache;
do {
len = td->remainder;
if (xfer->aframes != xfer->nframes) {
/*
* Verify the length and subtract
* the remainder from "frlengths[]":
*/
if (len > xfer->frlengths[xfer->aframes]) {
td->error = 1;
} else {
xfer->frlengths[xfer->aframes] -= len;
}
}
/* Check for transfer error */
if (td->error) {
/* the transfer is finished */
error = 1;
td = NULL;
break;
}
/* Check for short transfer */
if (len > 0) {
if (xfer->flags_int.short_frames_ok) {
/* follow alt next */
if (td->alt_next) {
td = td->obj_next;
} else {
td = NULL;
}
} else {
/* the transfer is finished */
td = NULL;
}
error = 0;
break;
}
td = td->obj_next;
/* this USB frame is complete */
error = 0;
break;
} while (0);
/* update transfer cache */
xfer->td_transfer_cache = td;
return (error ?
USB_ERR_STALLED : USB_ERR_NORMAL_COMPLETION);
}
static void
uss820dci_standard_done(struct usb_xfer *xfer)
{
usb_error_t err = 0;
DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n",
xfer, xfer->endpoint);
/* reset scanner */
xfer->td_transfer_cache = xfer->td_transfer_first;
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
err = uss820dci_standard_done_sub(xfer);
}
xfer->aframes = 1;
if (xfer->td_transfer_cache == NULL) {
goto done;
}
}
while (xfer->aframes != xfer->nframes) {
err = uss820dci_standard_done_sub(xfer);
xfer->aframes++;
if (xfer->td_transfer_cache == NULL) {
goto done;
}
}
if (xfer->flags_int.control_xfr &&
!xfer->flags_int.control_act) {
err = uss820dci_standard_done_sub(xfer);
}
done:
uss820dci_device_done(xfer, err);
}
/*------------------------------------------------------------------------*
* uss820dci_device_done
*
* NOTE: this function can be called more than one time on the
* same USB transfer!
*------------------------------------------------------------------------*/
static void
uss820dci_device_done(struct usb_xfer *xfer, usb_error_t error)
{
USB_BUS_LOCK_ASSERT(xfer->xroot->bus, MA_OWNED);
DPRINTFN(2, "xfer=%p, endpoint=%p, error=%d\n",
xfer, xfer->endpoint, error);
if (xfer->flags_int.usb_mode == USB_MODE_DEVICE) {
uss820dci_intr_set(xfer, 0);
}
/* dequeue transfer and start next transfer */
usbd_transfer_done(xfer, error);
}
static void
uss820dci_xfer_stall(struct usb_xfer *xfer)
{
uss820dci_device_done(xfer, USB_ERR_STALLED);
}
static void
uss820dci_set_stall(struct usb_device *udev,
struct usb_endpoint *ep, uint8_t *did_stall)
{
struct uss820dci_softc *sc;
uint8_t ep_no;
uint8_t ep_type;
uint8_t ep_dir;
uint8_t temp;
USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED);
DPRINTFN(5, "endpoint=%p\n", ep);
/* set FORCESTALL */
sc = USS820_DCI_BUS2SC(udev->bus);
ep_no = (ep->edesc->bEndpointAddress & UE_ADDR);
ep_dir = (ep->edesc->bEndpointAddress & (UE_DIR_IN | UE_DIR_OUT));
ep_type = (ep->edesc->bmAttributes & UE_XFERTYPE);
if (ep_type == UE_CONTROL) {
/* should not happen */
return;
}
USS820_WRITE_1(sc, USS820_EPINDEX, ep_no);
if (ep_dir == UE_DIR_IN) {
temp = USS820_EPCON_TXSTL;
} else {
temp = USS820_EPCON_RXSTL;
}
uss820dci_update_shared_1(sc, USS820_EPCON, 0xFF, temp);
}
static void
uss820dci_clear_stall_sub(struct uss820dci_softc *sc,
uint8_t ep_no, uint8_t ep_type, uint8_t ep_dir)
{
uint8_t temp;
if (ep_type == UE_CONTROL) {
/* clearing stall is not needed */
return;
}
/* select endpoint index */
USS820_WRITE_1(sc, USS820_EPINDEX, ep_no);
/* clear stall and disable I/O transfers */
if (ep_dir == UE_DIR_IN) {
temp = 0xFF ^ (USS820_EPCON_TXOE |
USS820_EPCON_TXSTL);
} else {
temp = 0xFF ^ (USS820_EPCON_RXIE |
USS820_EPCON_RXSTL);
}
uss820dci_update_shared_1(sc, USS820_EPCON, temp, 0);
if (ep_dir == UE_DIR_IN) {
/* reset data toggle */
USS820_WRITE_1(sc, USS820_TXSTAT,
USS820_TXSTAT_TXSOVW);
/* reset FIFO */
temp = USS820_READ_1(sc, USS820_TXCON);
temp |= USS820_TXCON_TXCLR;
USS820_WRITE_1(sc, USS820_TXCON, temp);
temp &= ~USS820_TXCON_TXCLR;
USS820_WRITE_1(sc, USS820_TXCON, temp);
} else {
/* reset data toggle */
uss820dci_update_shared_1(sc, USS820_RXSTAT,
0, USS820_RXSTAT_RXSOVW);
/* reset FIFO */
temp = USS820_READ_1(sc, USS820_RXCON);
temp |= USS820_RXCON_RXCLR;
temp &= ~USS820_RXCON_RXFFRC;
USS820_WRITE_1(sc, USS820_RXCON, temp);
temp &= ~USS820_RXCON_RXCLR;
USS820_WRITE_1(sc, USS820_RXCON, temp);
}
}
static void
uss820dci_clear_stall(struct usb_device *udev, struct usb_endpoint *ep)
{
struct uss820dci_softc *sc;
struct usb_endpoint_descriptor *ed;
USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED);
DPRINTFN(5, "endpoint=%p\n", ep);
/* check mode */
if (udev->flags.usb_mode != USB_MODE_DEVICE) {
/* not supported */
return;
}
/* get softc */
sc = USS820_DCI_BUS2SC(udev->bus);
/* get endpoint descriptor */
ed = ep->edesc;
/* reset endpoint */
uss820dci_clear_stall_sub(sc,
(ed->bEndpointAddress & UE_ADDR),
(ed->bmAttributes & UE_XFERTYPE),
(ed->bEndpointAddress & (UE_DIR_IN | UE_DIR_OUT)));
}
usb_error_t
uss820dci_init(struct uss820dci_softc *sc)
{
const struct usb_hw_ep_profile *pf;
uint8_t n;
uint8_t temp;
DPRINTF("start\n");
/* set up the bus structure */
sc->sc_bus.usbrev = USB_REV_1_1;
sc->sc_bus.methods = &uss820dci_bus_methods;
USB_BUS_LOCK(&sc->sc_bus);
/* we always have VBUS */
sc->sc_flags.status_vbus = 1;
/* reset the chip */
USS820_WRITE_1(sc, USS820_SCR, USS820_SCR_SRESET);
DELAY(100);
USS820_WRITE_1(sc, USS820_SCR, 0);
/* wait for reset to complete */
for (n = 0;; n++) {
temp = USS820_READ_1(sc, USS820_MCSR);
if (temp & USS820_MCSR_INIT) {
break;
}
if (n == 100) {
USB_BUS_UNLOCK(&sc->sc_bus);
return (USB_ERR_INVAL);
}
/* wait a little for things to stabilise */
DELAY(100);
}
/* do a pulldown */
uss820dci_pull_down(sc);
/* wait 10ms for pulldown to stabilise */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 100);
/* check hardware revision */
temp = USS820_READ_1(sc, USS820_REV);
if (temp < 0x13) {
USB_BUS_UNLOCK(&sc->sc_bus);
return (USB_ERR_INVAL);
}
/* enable interrupts */
USS820_WRITE_1(sc, USS820_SCR,
USS820_SCR_T_IRQ |
USS820_SCR_IE_RESET |
/* USS820_SCR_RWUPE | */
USS820_SCR_IE_SUSP |
USS820_SCR_IRQPOL);
/* enable interrupts */
USS820_WRITE_1(sc, USS820_SCRATCH,
USS820_SCRATCH_IE_RESUME);
/* enable features */
USS820_WRITE_1(sc, USS820_MCSR,
USS820_MCSR_BDFEAT |
USS820_MCSR_FEAT);
sc->sc_flags.mcsr_feat = 1;
/* disable interrupts */
USS820_WRITE_1(sc, USS820_SBIE, 0);
/* disable interrupts */
USS820_WRITE_1(sc, USS820_SBIE1, 0);
/* disable all endpoints */
for (n = 0; n != USS820_EP_MAX; n++) {
/* select endpoint */
USS820_WRITE_1(sc, USS820_EPINDEX, n);
/* disable endpoint */
uss820dci_update_shared_1(sc, USS820_EPCON, 0, 0);
}
/*
* Initialise default values for some registers that cannot be
* changed during operation!
*/
for (n = 0; n != USS820_EP_MAX; n++) {
uss820dci_get_hw_ep_profile(NULL, &pf, n);
/* the maximum frame sizes should be the same */
if (pf->max_in_frame_size != pf->max_out_frame_size) {
DPRINTF("Max frame size mismatch %u != %u\n",
pf->max_in_frame_size, pf->max_out_frame_size);
}
if (pf->support_isochronous) {
if (pf->max_in_frame_size <= 64) {
temp = (USS820_TXCON_FFSZ_16_64 |
USS820_TXCON_TXISO |
USS820_TXCON_ATM);
} else if (pf->max_in_frame_size <= 256) {
temp = (USS820_TXCON_FFSZ_64_256 |
USS820_TXCON_TXISO |
USS820_TXCON_ATM);
} else if (pf->max_in_frame_size <= 512) {
temp = (USS820_TXCON_FFSZ_8_512 |
USS820_TXCON_TXISO |
USS820_TXCON_ATM);
} else { /* 1024 bytes */
temp = (USS820_TXCON_FFSZ_32_1024 |
USS820_TXCON_TXISO |
USS820_TXCON_ATM);
}
} else {
if ((pf->max_in_frame_size <= 8) &&
(sc->sc_flags.mcsr_feat)) {
temp = (USS820_TXCON_FFSZ_8_512 |
USS820_TXCON_ATM);
} else if (pf->max_in_frame_size <= 16) {
temp = (USS820_TXCON_FFSZ_16_64 |
USS820_TXCON_ATM);
} else if ((pf->max_in_frame_size <= 32) &&
(sc->sc_flags.mcsr_feat)) {
temp = (USS820_TXCON_FFSZ_32_1024 |
USS820_TXCON_ATM);
} else { /* 64 bytes */
temp = (USS820_TXCON_FFSZ_64_256 |
USS820_TXCON_ATM);
}
}
/* need to configure the chip early */
USS820_WRITE_1(sc, USS820_EPINDEX, n);
USS820_WRITE_1(sc, USS820_TXCON, temp);
USS820_WRITE_1(sc, USS820_RXCON, temp);
if (pf->support_control) {
temp = USS820_EPCON_CTLEP |
USS820_EPCON_RXSPM |
USS820_EPCON_RXIE |
USS820_EPCON_RXEPEN |
USS820_EPCON_TXOE |
USS820_EPCON_TXEPEN;
} else {
temp = USS820_EPCON_RXEPEN | USS820_EPCON_TXEPEN;
}
uss820dci_update_shared_1(sc, USS820_EPCON, 0xFF, temp);
}
USB_BUS_UNLOCK(&sc->sc_bus);
/* catch any lost interrupts */
uss820dci_do_poll(&sc->sc_bus);
return (0); /* success */
}
void
uss820dci_uninit(struct uss820dci_softc *sc)
{
uint8_t temp;
USB_BUS_LOCK(&sc->sc_bus);
/* disable all interrupts */
temp = USS820_READ_1(sc, USS820_SCR);
temp &= ~USS820_SCR_T_IRQ;
USS820_WRITE_1(sc, USS820_SCR, temp);
sc->sc_flags.port_powered = 0;
sc->sc_flags.status_vbus = 0;
sc->sc_flags.status_bus_reset = 0;
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 0;
sc->sc_flags.change_connect = 1;
uss820dci_pull_down(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
uss820dci_suspend(struct uss820dci_softc *sc)
{
/* TODO */
}
static void
uss820dci_resume(struct uss820dci_softc *sc)
{
/* TODO */
}
static void
uss820dci_do_poll(struct usb_bus *bus)
{
struct uss820dci_softc *sc = USS820_DCI_BUS2SC(bus);
USB_BUS_LOCK(&sc->sc_bus);
uss820dci_interrupt_poll(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
/*------------------------------------------------------------------------*
* at91dci bulk support
*------------------------------------------------------------------------*/
static void
uss820dci_device_bulk_open(struct usb_xfer *xfer)
{
return;
}
static void
uss820dci_device_bulk_close(struct usb_xfer *xfer)
{
uss820dci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
uss820dci_device_bulk_enter(struct usb_xfer *xfer)
{
return;
}
static void
uss820dci_device_bulk_start(struct usb_xfer *xfer)
{
/* setup TDs */
uss820dci_setup_standard_chain(xfer);
uss820dci_start_standard_chain(xfer);
}
struct usb_pipe_methods uss820dci_device_bulk_methods =
{
.open = uss820dci_device_bulk_open,
.close = uss820dci_device_bulk_close,
.enter = uss820dci_device_bulk_enter,
.start = uss820dci_device_bulk_start,
};
/*------------------------------------------------------------------------*
* at91dci control support
*------------------------------------------------------------------------*/
static void
uss820dci_device_ctrl_open(struct usb_xfer *xfer)
{
return;
}
static void
uss820dci_device_ctrl_close(struct usb_xfer *xfer)
{
uss820dci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
uss820dci_device_ctrl_enter(struct usb_xfer *xfer)
{
return;
}
static void
uss820dci_device_ctrl_start(struct usb_xfer *xfer)
{
/* setup TDs */
uss820dci_setup_standard_chain(xfer);
uss820dci_start_standard_chain(xfer);
}
struct usb_pipe_methods uss820dci_device_ctrl_methods =
{
.open = uss820dci_device_ctrl_open,
.close = uss820dci_device_ctrl_close,
.enter = uss820dci_device_ctrl_enter,
.start = uss820dci_device_ctrl_start,
};
/*------------------------------------------------------------------------*
* at91dci interrupt support
*------------------------------------------------------------------------*/
static void
uss820dci_device_intr_open(struct usb_xfer *xfer)
{
return;
}
static void
uss820dci_device_intr_close(struct usb_xfer *xfer)
{
uss820dci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
uss820dci_device_intr_enter(struct usb_xfer *xfer)
{
return;
}
static void
uss820dci_device_intr_start(struct usb_xfer *xfer)
{
/* setup TDs */
uss820dci_setup_standard_chain(xfer);
uss820dci_start_standard_chain(xfer);
}
struct usb_pipe_methods uss820dci_device_intr_methods =
{
.open = uss820dci_device_intr_open,
.close = uss820dci_device_intr_close,
.enter = uss820dci_device_intr_enter,
.start = uss820dci_device_intr_start,
};
/*------------------------------------------------------------------------*
* at91dci full speed isochronous support
*------------------------------------------------------------------------*/
static void
uss820dci_device_isoc_fs_open(struct usb_xfer *xfer)
{
return;
}
static void
uss820dci_device_isoc_fs_close(struct usb_xfer *xfer)
{
uss820dci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
uss820dci_device_isoc_fs_enter(struct usb_xfer *xfer)
{
struct uss820dci_softc *sc = USS820_DCI_BUS2SC(xfer->xroot->bus);
uint32_t temp;
uint32_t nframes;
DPRINTFN(6, "xfer=%p next=%d nframes=%d\n",
xfer, xfer->endpoint->isoc_next, xfer->nframes);
/* get the current frame index - we don't need the high bits */
nframes = USS820_READ_1(sc, USS820_SOFL);
/*
* check if the frame index is within the window where the
* frames will be inserted
*/
temp = (nframes - xfer->endpoint->isoc_next) & USS820_SOFL_MASK;
if ((xfer->endpoint->is_synced == 0) ||
(temp < xfer->nframes)) {
/*
* If there is data underflow or the pipe queue is
* empty we schedule the transfer a few frames ahead
* of the current frame position. Else two isochronous
* transfers might overlap.
*/
xfer->endpoint->isoc_next = (nframes + 3) & USS820_SOFL_MASK;
xfer->endpoint->is_synced = 1;
DPRINTFN(3, "start next=%d\n", xfer->endpoint->isoc_next);
}
/*
* compute how many milliseconds the insertion is ahead of the
* current frame position:
*/
temp = (xfer->endpoint->isoc_next - nframes) & USS820_SOFL_MASK;
/*
* pre-compute when the isochronous transfer will be finished:
*/
xfer->isoc_time_complete =
usb_isoc_time_expand(&sc->sc_bus, nframes) + temp +
xfer->nframes;
/* compute frame number for next insertion */
xfer->endpoint->isoc_next += xfer->nframes;
/* setup TDs */
uss820dci_setup_standard_chain(xfer);
}
static void
uss820dci_device_isoc_fs_start(struct usb_xfer *xfer)
{
/* start TD chain */
uss820dci_start_standard_chain(xfer);
}
struct usb_pipe_methods uss820dci_device_isoc_fs_methods =
{
.open = uss820dci_device_isoc_fs_open,
.close = uss820dci_device_isoc_fs_close,
.enter = uss820dci_device_isoc_fs_enter,
.start = uss820dci_device_isoc_fs_start,
};
/*------------------------------------------------------------------------*
* at91dci root control support
*------------------------------------------------------------------------*
* Simulate a hardware HUB by handling all the necessary requests.
*------------------------------------------------------------------------*/
static const struct usb_device_descriptor uss820dci_devd = {
.bLength = sizeof(struct usb_device_descriptor),
.bDescriptorType = UDESC_DEVICE,
.bcdUSB = {0x00, 0x02},
.bDeviceClass = UDCLASS_HUB,
.bDeviceSubClass = UDSUBCLASS_HUB,
.bDeviceProtocol = UDPROTO_FSHUB,
.bMaxPacketSize = 64,
.bcdDevice = {0x00, 0x01},
.iManufacturer = 1,
.iProduct = 2,
.bNumConfigurations = 1,
};
static const struct usb_device_qualifier uss820dci_odevd = {
.bLength = sizeof(struct usb_device_qualifier),
.bDescriptorType = UDESC_DEVICE_QUALIFIER,
.bcdUSB = {0x00, 0x02},
.bDeviceClass = UDCLASS_HUB,
.bDeviceSubClass = UDSUBCLASS_HUB,
.bDeviceProtocol = UDPROTO_FSHUB,
.bMaxPacketSize0 = 0,
.bNumConfigurations = 0,
};
static const struct uss820dci_config_desc uss820dci_confd = {
.confd = {
.bLength = sizeof(struct usb_config_descriptor),
.bDescriptorType = UDESC_CONFIG,
.wTotalLength[0] = sizeof(uss820dci_confd),
.bNumInterface = 1,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = UC_SELF_POWERED,
.bMaxPower = 0,
},
.ifcd = {
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = UDESC_INTERFACE,
.bNumEndpoints = 1,
.bInterfaceClass = UICLASS_HUB,
.bInterfaceSubClass = UISUBCLASS_HUB,
.bInterfaceProtocol = 0,
},
.endpd = {
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = UDESC_ENDPOINT,
.bEndpointAddress = (UE_DIR_IN | USS820_DCI_INTR_ENDPT),
.bmAttributes = UE_INTERRUPT,
.wMaxPacketSize[0] = 8,
.bInterval = 255,
},
};
#define HSETW(ptr, val) ptr = { (uint8_t)(val), (uint8_t)((val) >> 8) }
static const struct usb_hub_descriptor_min uss820dci_hubd = {
.bDescLength = sizeof(uss820dci_hubd),
.bDescriptorType = UDESC_HUB,
.bNbrPorts = 1,
HSETW(.wHubCharacteristics, (UHD_PWR_NO_SWITCH | UHD_OC_INDIVIDUAL)),
.bPwrOn2PwrGood = 50,
.bHubContrCurrent = 0,
.DeviceRemovable = {0}, /* port is removable */
};
#define STRING_LANG \
0x09, 0x04, /* American English */
#define STRING_VENDOR \
'A', 0, 'G', 0, 'E', 0, 'R', 0, 'E', 0
#define STRING_PRODUCT \
'D', 0, 'C', 0, 'I', 0, ' ', 0, 'R', 0, \
'o', 0, 'o', 0, 't', 0, ' ', 0, 'H', 0, \
'U', 0, 'B', 0,
USB_MAKE_STRING_DESC(STRING_LANG, uss820dci_langtab);
USB_MAKE_STRING_DESC(STRING_VENDOR, uss820dci_vendor);
USB_MAKE_STRING_DESC(STRING_PRODUCT, uss820dci_product);
static usb_error_t
uss820dci_roothub_exec(struct usb_device *udev,
struct usb_device_request *req, const void **pptr, uint16_t *plength)
{
struct uss820dci_softc *sc = USS820_DCI_BUS2SC(udev->bus);
const void *ptr;
uint16_t len;
uint16_t value;
uint16_t index;
usb_error_t err;
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
/* buffer reset */
ptr = (const void *)&sc->sc_hub_temp;
len = 0;
err = 0;
value = UGETW(req->wValue);
index = UGETW(req->wIndex);
/* demultiplex the control request */
switch (req->bmRequestType) {
case UT_READ_DEVICE:
switch (req->bRequest) {
case UR_GET_DESCRIPTOR:
goto tr_handle_get_descriptor;
case UR_GET_CONFIG:
goto tr_handle_get_config;
case UR_GET_STATUS:
goto tr_handle_get_status;
default:
goto tr_stalled;
}
break;
case UT_WRITE_DEVICE:
switch (req->bRequest) {
case UR_SET_ADDRESS:
goto tr_handle_set_address;
case UR_SET_CONFIG:
goto tr_handle_set_config;
case UR_CLEAR_FEATURE:
goto tr_valid; /* nop */
case UR_SET_DESCRIPTOR:
goto tr_valid; /* nop */
case UR_SET_FEATURE:
default:
goto tr_stalled;
}
break;
case UT_WRITE_ENDPOINT:
switch (req->bRequest) {
case UR_CLEAR_FEATURE:
switch (UGETW(req->wValue)) {
case UF_ENDPOINT_HALT:
goto tr_handle_clear_halt;
case UF_DEVICE_REMOTE_WAKEUP:
goto tr_handle_clear_wakeup;
default:
goto tr_stalled;
}
break;
case UR_SET_FEATURE:
switch (UGETW(req->wValue)) {
case UF_ENDPOINT_HALT:
goto tr_handle_set_halt;
case UF_DEVICE_REMOTE_WAKEUP:
goto tr_handle_set_wakeup;
default:
goto tr_stalled;
}
break;
case UR_SYNCH_FRAME:
goto tr_valid; /* nop */
default:
goto tr_stalled;
}
break;
case UT_READ_ENDPOINT:
switch (req->bRequest) {
case UR_GET_STATUS:
goto tr_handle_get_ep_status;
default:
goto tr_stalled;
}
break;
case UT_WRITE_INTERFACE:
switch (req->bRequest) {
case UR_SET_INTERFACE:
goto tr_handle_set_interface;
case UR_CLEAR_FEATURE:
goto tr_valid; /* nop */
case UR_SET_FEATURE:
default:
goto tr_stalled;
}
break;
case UT_READ_INTERFACE:
switch (req->bRequest) {
case UR_GET_INTERFACE:
goto tr_handle_get_interface;
case UR_GET_STATUS:
goto tr_handle_get_iface_status;
default:
goto tr_stalled;
}
break;
case UT_WRITE_CLASS_INTERFACE:
case UT_WRITE_VENDOR_INTERFACE:
/* XXX forward */
break;
case UT_READ_CLASS_INTERFACE:
case UT_READ_VENDOR_INTERFACE:
/* XXX forward */
break;
case UT_WRITE_CLASS_DEVICE:
switch (req->bRequest) {
case UR_CLEAR_FEATURE:
goto tr_valid;
case UR_SET_DESCRIPTOR:
case UR_SET_FEATURE:
break;
default:
goto tr_stalled;
}
break;
case UT_WRITE_CLASS_OTHER:
switch (req->bRequest) {
case UR_CLEAR_FEATURE:
goto tr_handle_clear_port_feature;
case UR_SET_FEATURE:
goto tr_handle_set_port_feature;
case UR_CLEAR_TT_BUFFER:
case UR_RESET_TT:
case UR_STOP_TT:
goto tr_valid;
default:
goto tr_stalled;
}
break;
case UT_READ_CLASS_OTHER:
switch (req->bRequest) {
case UR_GET_TT_STATE:
goto tr_handle_get_tt_state;
case UR_GET_STATUS:
goto tr_handle_get_port_status;
default:
goto tr_stalled;
}
break;
case UT_READ_CLASS_DEVICE:
switch (req->bRequest) {
case UR_GET_DESCRIPTOR:
goto tr_handle_get_class_descriptor;
case UR_GET_STATUS:
goto tr_handle_get_class_status;
default:
goto tr_stalled;
}
break;
default:
goto tr_stalled;
}
goto tr_valid;
tr_handle_get_descriptor:
switch (value >> 8) {
case UDESC_DEVICE:
if (value & 0xff) {
goto tr_stalled;
}
len = sizeof(uss820dci_devd);
ptr = (const void *)&uss820dci_devd;
goto tr_valid;
case UDESC_CONFIG:
if (value & 0xff) {
goto tr_stalled;
}
len = sizeof(uss820dci_confd);
ptr = (const void *)&uss820dci_confd;
goto tr_valid;
case UDESC_STRING:
switch (value & 0xff) {
case 0: /* Language table */
len = sizeof(uss820dci_langtab);
ptr = (const void *)&uss820dci_langtab;
goto tr_valid;
case 1: /* Vendor */
len = sizeof(uss820dci_vendor);
ptr = (const void *)&uss820dci_vendor;
goto tr_valid;
case 2: /* Product */
len = sizeof(uss820dci_product);
ptr = (const void *)&uss820dci_product;
goto tr_valid;
default:
break;
}
break;
default:
goto tr_stalled;
}
goto tr_stalled;
tr_handle_get_config:
len = 1;
sc->sc_hub_temp.wValue[0] = sc->sc_conf;
goto tr_valid;
tr_handle_get_status:
len = 2;
USETW(sc->sc_hub_temp.wValue, UDS_SELF_POWERED);
goto tr_valid;
tr_handle_set_address:
if (value & 0xFF00) {
goto tr_stalled;
}
sc->sc_rt_addr = value;
goto tr_valid;
tr_handle_set_config:
if (value >= 2) {
goto tr_stalled;
}
sc->sc_conf = value;
goto tr_valid;
tr_handle_get_interface:
len = 1;
sc->sc_hub_temp.wValue[0] = 0;
goto tr_valid;
tr_handle_get_tt_state:
tr_handle_get_class_status:
tr_handle_get_iface_status:
tr_handle_get_ep_status:
len = 2;
USETW(sc->sc_hub_temp.wValue, 0);
goto tr_valid;
tr_handle_set_halt:
tr_handle_set_interface:
tr_handle_set_wakeup:
tr_handle_clear_wakeup:
tr_handle_clear_halt:
goto tr_valid;
tr_handle_clear_port_feature:
if (index != 1) {
goto tr_stalled;
}
DPRINTFN(9, "UR_CLEAR_PORT_FEATURE on port %d\n", index);
switch (value) {
case UHF_PORT_SUSPEND:
uss820dci_wakeup_peer(sc);
break;
case UHF_PORT_ENABLE:
sc->sc_flags.port_enabled = 0;
break;
case UHF_PORT_TEST:
case UHF_PORT_INDICATOR:
case UHF_C_PORT_ENABLE:
case UHF_C_PORT_OVER_CURRENT:
case UHF_C_PORT_RESET:
/* nops */
break;
case UHF_PORT_POWER:
sc->sc_flags.port_powered = 0;
uss820dci_pull_down(sc);
break;
case UHF_C_PORT_CONNECTION:
sc->sc_flags.change_connect = 0;
break;
case UHF_C_PORT_SUSPEND:
sc->sc_flags.change_suspend = 0;
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
goto tr_valid;
tr_handle_set_port_feature:
if (index != 1) {
goto tr_stalled;
}
DPRINTFN(9, "UR_SET_PORT_FEATURE\n");
switch (value) {
case UHF_PORT_ENABLE:
sc->sc_flags.port_enabled = 1;
break;
case UHF_PORT_SUSPEND:
case UHF_PORT_RESET:
case UHF_PORT_TEST:
case UHF_PORT_INDICATOR:
/* nops */
break;
case UHF_PORT_POWER:
sc->sc_flags.port_powered = 1;
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
goto tr_valid;
tr_handle_get_port_status:
DPRINTFN(9, "UR_GET_PORT_STATUS\n");
if (index != 1) {
goto tr_stalled;
}
if (sc->sc_flags.status_vbus) {
uss820dci_pull_up(sc);
} else {
uss820dci_pull_down(sc);
}
/* Select FULL-speed and Device Side Mode */
value = UPS_PORT_MODE_DEVICE;
if (sc->sc_flags.port_powered) {
value |= UPS_PORT_POWER;
}
if (sc->sc_flags.port_enabled) {
value |= UPS_PORT_ENABLED;
}
if (sc->sc_flags.status_vbus &&
sc->sc_flags.status_bus_reset) {
value |= UPS_CURRENT_CONNECT_STATUS;
}
if (sc->sc_flags.status_suspend) {
value |= UPS_SUSPEND;
}
USETW(sc->sc_hub_temp.ps.wPortStatus, value);
value = 0;
if (sc->sc_flags.change_connect) {
value |= UPS_C_CONNECT_STATUS;
}
if (sc->sc_flags.change_suspend) {
value |= UPS_C_SUSPEND;
}
USETW(sc->sc_hub_temp.ps.wPortChange, value);
len = sizeof(sc->sc_hub_temp.ps);
goto tr_valid;
tr_handle_get_class_descriptor:
if (value & 0xFF) {
goto tr_stalled;
}
ptr = (const void *)&uss820dci_hubd;
len = sizeof(uss820dci_hubd);
goto tr_valid;
tr_stalled:
err = USB_ERR_STALLED;
tr_valid:
done:
*plength = len;
*pptr = ptr;
return (err);
}
static void
uss820dci_xfer_setup(struct usb_setup_params *parm)
{
const struct usb_hw_ep_profile *pf;
struct uss820dci_softc *sc;
struct usb_xfer *xfer;
void *last_obj;
uint32_t ntd;
uint32_t n;
uint8_t ep_no;
sc = USS820_DCI_BUS2SC(parm->udev->bus);
xfer = parm->curr_xfer;
/*
* NOTE: This driver does not use any of the parameters that
* are computed from the following values. Just set some
* reasonable dummies:
*/
parm->hc_max_packet_size = 0x500;
parm->hc_max_packet_count = 1;
parm->hc_max_frame_size = 0x500;
usbd_transfer_setup_sub(parm);
/*
* compute maximum number of TDs
*/
if (parm->methods == &uss820dci_device_ctrl_methods) {
ntd = xfer->nframes + 1 /* STATUS */ + 1 /* SYNC */ ;
} else if (parm->methods == &uss820dci_device_bulk_methods) {
ntd = xfer->nframes + 1 /* SYNC */ ;
} else if (parm->methods == &uss820dci_device_intr_methods) {
ntd = xfer->nframes + 1 /* SYNC */ ;
} else if (parm->methods == &uss820dci_device_isoc_fs_methods) {
ntd = xfer->nframes + 1 /* SYNC */ ;
} else {
ntd = 0;
}
/*
* check if "usbd_transfer_setup_sub" set an error
*/
if (parm->err) {
return;
}
/*
* allocate transfer descriptors
*/
last_obj = NULL;
/*
* get profile stuff
*/
if (ntd) {
ep_no = xfer->endpointno & UE_ADDR;
uss820dci_get_hw_ep_profile(parm->udev, &pf, ep_no);
if (pf == NULL) {
/* should not happen */
parm->err = USB_ERR_INVAL;
return;
}
} else {
ep_no = 0;
pf = NULL;
}
/* align data */
parm->size[0] += ((-parm->size[0]) & (USB_HOST_ALIGN - 1));
for (n = 0; n != ntd; n++) {
struct uss820dci_td *td;
if (parm->buf) {
td = USB_ADD_BYTES(parm->buf, parm->size[0]);
/* init TD */
td->io_tag = sc->sc_io_tag;
td->io_hdl = sc->sc_io_hdl;
td->max_packet_size = xfer->max_packet_size;
td->ep_index = ep_no;
if (pf->support_multi_buffer &&
(parm->methods != &uss820dci_device_ctrl_methods)) {
td->support_multi_buffer = 1;
}
td->obj_next = last_obj;
last_obj = td;
}
parm->size[0] += sizeof(*td);
}
xfer->td_start[0] = last_obj;
}
static void
uss820dci_xfer_unsetup(struct usb_xfer *xfer)
{
return;
}
static void
uss820dci_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc,
struct usb_endpoint *ep)
{
struct uss820dci_softc *sc = USS820_DCI_BUS2SC(udev->bus);
DPRINTFN(2, "endpoint=%p, addr=%d, endpt=%d, mode=%d (%d)\n",
ep, udev->address,
edesc->bEndpointAddress, udev->flags.usb_mode,
sc->sc_rt_addr);
if (udev->device_index != sc->sc_rt_addr) {
if (udev->speed != USB_SPEED_FULL) {
/* not supported */
return;
}
switch (edesc->bmAttributes & UE_XFERTYPE) {
case UE_CONTROL:
ep->methods = &uss820dci_device_ctrl_methods;
break;
case UE_INTERRUPT:
ep->methods = &uss820dci_device_intr_methods;
break;
case UE_ISOCHRONOUS:
ep->methods = &uss820dci_device_isoc_fs_methods;
break;
case UE_BULK:
ep->methods = &uss820dci_device_bulk_methods;
break;
default:
/* do nothing */
break;
}
}
}
static void
uss820dci_set_hw_power_sleep(struct usb_bus *bus, uint32_t state)
{
struct uss820dci_softc *sc = USS820_DCI_BUS2SC(bus);
switch (state) {
case USB_HW_POWER_SUSPEND:
uss820dci_suspend(sc);
break;
case USB_HW_POWER_SHUTDOWN:
uss820dci_uninit(sc);
break;
case USB_HW_POWER_RESUME:
uss820dci_resume(sc);
break;
default:
break;
}
}
struct usb_bus_methods uss820dci_bus_methods =
{
.endpoint_init = &uss820dci_ep_init,
.xfer_setup = &uss820dci_xfer_setup,
.xfer_unsetup = &uss820dci_xfer_unsetup,
.get_hw_ep_profile = &uss820dci_get_hw_ep_profile,
.xfer_stall = &uss820dci_xfer_stall,
.set_stall = &uss820dci_set_stall,
.clear_stall = &uss820dci_clear_stall,
.roothub_exec = &uss820dci_roothub_exec,
.xfer_poll = &uss820dci_do_poll,
.set_hw_power_sleep = uss820dci_set_hw_power_sleep,
};
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